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Chemistry

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Esperanza Hahn

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Cards in this guide (9)
How is stoichiometry used

Stoichiometry is used to find the molar ratios between the reactants of a chemical reaction.

How are models affected by new evidence

Models are changed if they don't fit new data.

What happens to the anode in an electrochemical cell

it loses mass

What happens at the cathode in an electrolytic cell

Reduction occurs at the cathode in an electrolytic cell.

Which element is the reducing agent in a redox reaction

The reactant that has the atom that gets oxidized

Which of the following best describes a galvanic cell

A battery containing a spontaneous redox reaction

What is the oxidation state of Cl in HClO3

+5. In oxyacids, oxygen has an oxidation state of -2 and hydrogen an oxidation state of +1. Therefore, the single chlorine atom must have an oxidation state of +5 for the total oxidation states to add to zero.
+5. In oxyacids, oxygen has an oxidation state of -2 and hydrogen an oxidation state of +1

What does a positive cell voltage mean

The reaction is spontaneous.

Is not a concern regarding the use of corn as a biofuel

The color of corn is different than the color of gasoline or coal

APEX

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